Clark is an English language surname with historical links to England, Scotland, and Ireland,Clarke coat of arms, family crest and family history". irishsurnames.com. Retrieved 30 December 2007. ultim
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf441d6e1b2eb93e8b2c946288d21a2a2891fe4b0d0529ffbae1ab4b5261681d5. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8a27dccc-85a1-470f-8d91-814abc114d73.json and https://artists.proofprofile.net/proofs/artist/8a27dccc-85a1-470f-8d91-814abc114d73.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d1df2c2f6c45e87afa9da322173f5d9b7abacba223f7fb257a72a92a5b82d7. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBPW1300090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9365bf1b3441dacabd71de775158d53995f811dd46bc95486a767ad4f56693ca. Chain 2 (Bitcoin): anchored in block 960165 (2026-07-29T23:29:40Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US64G0906703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51421d0a55da46c144511c29a88f4fd175d6cdff1b31e5c138b58cb98a06e457. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBCFB0701500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112fae4e2e464ea08848bcd5c323d844574b8a96e3845884d4451e2539bf701c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBU2D0802506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68dd52896c1f7b3a2fb1326dc4ff2cfe4e190827aec68c580900b2ac73a72110. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBPW1300091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee5775a1a2e3d1f28d02808a1529b92704e4b6e27d8f57710a52dae98e9d8caa. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US78Q1110188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744bdcea6f261f671575c00beeac47de2cb8cd127ff3ffef8a8ed520863a4cef. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBPW1300092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e210aabb5f32e6e44fc9b10d9fd539c2ad6e408b7332c4f32fbaca8ccea2f3e. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBPW1300093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x965b24417153acc4a19ddb60a64ca48cbe9416e2acd8c23f7e138036c51ddd05. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRT091300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac98fea092779c6eb06be95c8a49aff6fc7e1ab44a9e99175d9adf251ede379. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBPW1300094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b05984cb149990332259a07e947c0ff2e19871cc8f21cf2cefa4117c2d11c2d. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBPW1300095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3421d07048c2b9ecdbfea0e3dc3671533a0202a7148efd82290fae375b39bb. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBPW1300096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491c311bc2244ebde152f2c5e3cd04f92e7c891eb439adbbf336d2f5d963f875. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBPW0600154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e9bed6f7a934bfe6dbf14c1ba3b13a1c14a409d56dc3c4e11c43bd93c61428. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBPW1300097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf885d39df103e5d747772949ebdd66ca0be04d6aecbf6b6d9f36ed2b49407ee9. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBPW1300098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6518fe808f2cafd7e336ff3282e6193af7e51bc819a37da97c62148ecda2ad35. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAAA1000406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x015277a68fc904b238e24dc4153cdcea005347f34078fde78d8461ea7d15db72. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBPW1300100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0813acc8d58a0c845a4eb3bd3da0ecc533ce183b9cc69efcf11e197e109f275. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBCFB1205017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b6027a59a7f943507bf531a149ed757857399aa6a107f9a6f8bfac7a312a03. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBPW1300101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd17e834174f96af500d70753ad3eee0d8eb56157744f5693413b92564647fad5. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRT091000072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7861524f7e01d13e475e1d12e430dfe1fdecd41e8cc52b39136edb05ceae921c. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBPW0900256.
Evil Beast (People In The Way) - Clark Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f6fe8e4f949bbf295185d137b676a744413fed5a72d261d5546535b87bcd6d. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBPW1300102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a34dae075956832ca4f2e366d095989940b1af7167df1c84602630bb9e36e6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBPW1300103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe460c23b15e982a42b2d7854bed5c62d16a33a8ccdbd32a717d65e97dcd83acf. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DED621000409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01297f21a072262c44b1151d45e6e3e17dc6c69988ddd30300fa30a4609475c1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJH1100013.
Siberian Hooty / Fallen Boy - Clark Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b712a945cea6c4b84b0d362f29d0580cf227992635b307a29b9ae1e047a775f. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBPW1300104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc917c786bf0f45a8f4169c84ef4f8c2bc936501f0446ba2e7373da7bfaef94cd. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBPW1300105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16846ef7e9a2f50fccd9533b735bd5f433168976e09e997f7755ef16d3e4d8dd. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US78Q0700046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c1a041d25e0821c9c05416170969442d2346075488a1842d5e1bace101a6a8. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBPW1300106.